Heat-dissipating adaptors for single-ended halogen quartz lamps to existing electrical lighting apparatus



Sept. 17, 1968 HY HILZEN 3,402,383

HEAT-DISSIPATING ADAPTORS FOR SINGLE'ENDED HALOGEN QUARTZ LAMPS TO EXISTING ELECTRICAL LIGHTING APPARATUS 2 Sheets-Sheet 1 Filed Dec. 7, 1967 FIG.2

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Hy Hilzen,

ATTORNEY.

Sept. 17. 1968 HY HILZEN 3,402,383

HEAT-DISSIPATING ADAPTORS FOR SINGLE-ENDED HALOGEN QUARTZ LAMPS TO EXISTING ELECTRICAL LIGHTING APPARATUS Filed Dec. 7, 1967 2 Sheets-Sheet Z FIG.I4

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United States Patent 3,402,383 HEAT-DISSIPATING ADAPTORS FOR SIN- GLE-ENDED HALOGEN QUARTZ LAMPS TO EXISTING ELECTRICAL LIGHTING APPARATUS Hy Hilzen, 40 Gateway Road, Yonkers, N.Y. 10703 Filed Dec. 7, 1967, Ser. No. 688,762 3 Claims. (Cl. 339-112) ABSTRACT OF THE DISCLOSURE To make an electrical halogen one-ended quartz lamp having a short heat conductive sleeve on its envelope immediately beyond its terminals, suitable for use in existing electrical lighting apparatus and to eliminate damage heretofore incident in its operation, this adaptor consists of a tubular metal casing of appreciable surface area and of material as aluminum to have effective heat-dissipating quality, a socket means at one end of the casing to receive the quartz lamps base and a base means at the other end of the casing to be received in the socket of the electrical lighting apparatus designed for a lamp of larger base than that of the quartz lamp and whose filaments midpoint is at a predetermined distance from its base, which distance is substantially greater than the corresponding distance in the quartz lamp. The casing is made of such dimensions that the distance between the mid-point of the filament of the quartz lamp it holds, and the base on the casing, is such predetermined distance. One embodiment of the socket means for the quartz lamp, carried in the casing, comprises a group of ceramic and metal pieces, held together in assembly by turning in an end of said casing and by teats in the casing body. Said turned-in casing end serves as a seat for said sleeve on the quartz lamp to impart the heat generated by the operation of the quartz lamp to the casing. The heat dissipating quality of the casing avoids damage generally.

The present invention relates to heat-dissipating adaptors for single-ended electrical halogen quartz lamps, which permit mounting such lamps in existing lighting apparatus and lighting fixtures which are designed for lamps of larger base size and in which the distance from filament center to base is greater than exists in such quartz lamps.

It is well known that too often the heat occurring at the base region of the quartz lamps becomes so intense that it melts not only the Molyfoil fuses incorporated in such lamp structures, but also the metal sockets of the adaptor components. In some existing adaptors, the main socket shells and those receiving the quartz lamp base, are built metal to metal, so melting damage occurs even in the lighting appliance socket.

Various attempts have been made to mitigate these bad effects, as for instance by providing heat-dissipating coatings, ceramic and sometimes metal sleeves about the lamp envelope immediately above its terminal means, but these of necessity are very short in length along the quartz lamp. These expedients have been of some help, but not enough to prevent the damage mentioned. In any event, with the use of adaptors heretofore made for these quartz lamps, said heat accumulation has made lamp life too short.

It is therefore the principal object of this invention to provide adaptors of the class mentioned, of novel and improved construction, which effectively dissipate the heat, thereby avoiding damage to the equipment and substantially increasing the operational life of the quartz lamps which are now in commerce.

A further object of this invention is to provide a novel and improved heat dissipating adaptor of the kind mentioned, comprising an interrelated arrangement of parts housed in and held in assembly by the heat-dissipating member, suitable to be received in existing main sockets of various types, and fulfilling the requirement that the mid-point of the quartz lamp filament shall be at a proper distance in relation to the lighting apparatus or fixture it is associated with,

A further object of this invention is to provide novel and improved heat-dissipating adaptors of the character described, which are simple in construction, reasonable in cost to manufacture, and efficient in carrying out the purposes for which they are designed.

Other objects and advantages will become apparent as this disclosure proceeds.

In the accompanying drawings forming part of this specification, similar characters of reference indicate corresponding parts in all the views.

FIG. 1 is a pictorial view showing an adaptor embodying teachings of this invention, holding a single-ended quartz lamp equipped with a ceramic sleeve which carries the lamps terminal screw shell.

FIG. 2 is an enlarged central elevational section of said adaptor, holding a quartz lamp of slightly modified construction; the lamps in both FIGS. 1 and 2, being commercial products.

FIG. 3 is a central elevational sectional view of a ceramic shroud in which the metal screw shell to receive the screw base of the quartz lamp, is positioned.

FIG. 4 is a perspective view of such screw shell, shown with a fragment of its connection wire.

FIG. 5 is a perspective view showing a ceramic saddle element which positions a metal blade element used to make contact with the centrally-disposed terminal of the lamp.

FIG. 6 is a bottom perspective view of FIG. 5.

FIG. 7 is a perspective view of said blade piece and a fragment of its connection wire.

FIG. 8 is an elevational view, shown partly in section, of a ceramic post which holds said saddle of FIG. 5, and the blade piece of FIG. 7, and which has holes therethrough for said connection wires which lead to the terminals of the larger base shell of the adapter; the latter to be received in the socket of an electrical appliance or fixture.

FIG. 9 is a top plan view of FIG. 8.

FIG. 10 is a bottom view of FIG. 8.

FIG. 11 is an inverted perspective view of a ceramic piece which carries the large bottom screw shell of the adaptor of FIG. 1.

FIG. 12 is a diagrammatic view showing the assembly of FIG. I mounted in a lighting fixture.

FIG. 13 is a perspective view of an adaptor embodying this invention, of modified construction.

FIG. 14 is a central longitudinal section of FIG. 13.

FIG. 15 is an elevational view of a quartz lamp having pin bi-post terminals.

FIG. 16 is a longitudinal section of an adaptor of modified form for the quartz lamp of FIG. 15.

FIG. 17 is an elevational view of an adaptor as shown in FIG. 16, but whose base is another type, called the four-pin lamp.

FIG. 18 is a top plan view of FIGS. 16 and 17, each considered separately.

FIG. 19 is a bottom view of FIG. 17.

FIG. 20 is a diagrammatic view of a spotlight equipped with a quartz lamp, and an adaptor embodying this invention.

In the drawings, the numeral 15 designates generally an adaptor, having at one end, the male metal screw shell 16 with its insulated central exposed terminal button 17, for insertion into a socket 18 of an electrical fixture 19 or the like, and having a female metal screw shell 20, which has a flange 21, to receive the male metal screw shell 22 which is at the end of a one-ended quartz lamp 50; a separate metal blade piece 23 being provided to be contacted by the centrally-disposed terminal 24 of said lamp. A ceramic tubular shroud 25 surrounding said screw shell 22, extends beyond the flange 21, and is provided with an internal annular seat 26 offered by the counterbore 27, against which seat, said flange rests. Said counterbore is deep enough to hold a portion of a ceramic saddle denoted generally by the numeral 28, having a central hole 29 through which the central contact post 30 of the lamp 50 extends; said flange 21 being between and in contact with both said seat 26 and said saddle. Said saddle also extends into an intermediate section of a stepped counterbore 31 which is in one end of a ceramic spacer post 32; the inner end of the shroud tube 25, being received in the outer section of said counterbore 31 in fitted relation therewith. The other end of the shroud tube is beyond the mouth of the shell 22, and the entrance to the hole of said tube is flared as shown at 33. The post rests on the face of the flange 36 on the tubular ceramic member 34, which carries the screw shell 16 on the thread 35. Said post 32 has holes 37 and 47 therethrough for the wires 38 and 39 which respectively connect the relatively small shell 22, and the blade piece 23, to the larger shell 16 and the terminal 17. The wire 38 leading from the shell 20, passes through the notch 41 in the saddle 28, thence through the hole 37 and the hole 40, and thence along the channel 43 to a solder point 44 on the shell 16. The wire 39 leading from the blade piece 23, passes through the hole 47, thence through the hole 40, and thence to the contact button 17 to which it is soldered. These wires are of course longer than the distance between the metal components they respectively connect, in order to be able to make the connections to 16 and 17. The excess of such wires are stored within the hole of the ceramic, headed screw member 34. The blade piece 23 extends through the diametrically opposite notches 45 and is thus held in position by the saddle 28, which is kept from turning because in said notches 45, set the seats 47 and 48 which are on the post 32. All the parts are tightly clamped together and held in permanent assembly, with all the ceramic components held in coaxial alignment, by the metal jacket 46, one end of which tubular form at its reduced section, is spun over into the flare 33, and its other end, which is of its enlarged section, is spun over the flange 36 of the ceramic member 34. The surface area of said jacket 46, is thus appreciably large.

The adaptor 15' embodying this invention for use in a socket of the pre-focus type, is shown in FIGS. 13 and 14, wherein the outer tubular casing 51 holds in assembly the aggregate indicated generally by the numeral 52, which comprises the assembly as in FIG. 2, of the parts shown in FIGS. 3, 4, 5, 7 and 8. Here too, the casing has its upper end turned in into the flare 33, to form the frusto-conical ring seat 53, immediately above and spaced from the screw shell 20' which latter is to receive the screw shell base 22 of the lamp 50. The mentioned aggregate 52 is held in assembly against said ring seat, by the inward teats 54 formed in said casing 51.

An adaptor 15" embodying this invention for a quartz lamp whose terminals are pins 55, is shown in FIG. 16, in which construction, the ceramic member 56 having the female metal sockets 57 for said pins 55, has a flared opening, into which the upper end of the tubular metal casing 58 is turned in to form the frusto-conical ring seat 59. The ceramic member 56 is held in assembly by the inward teats 60 formed in the casing 58.

The adaptor 15" is shown suited for a pre-focus socket. The adaptor 15" of FIG. 17 is like 15", except that it is shown for a socket suited to receive the terminal pins 61. Inclusion of the locating pins 62, is well known in the lamp art.

These adaptors are to suit the use of quartz lamps 50, 50', 50", in various installations designed to receive lamps of larger base size. Examples are the lighting fixture 19 and the spotlight apparatus as 19', which are designed that the center of the filament of the lamp used therewith shall be a distance L from the socket of said fixture, and a distance L shall be maintained which is to the center line of its optical system.

It is therefore to be noted that dimensions of the parts of the adaptors taught herein, shall be chosen to accomplish such dimensions of the class L to obtain optimum results from the quartz lamps in their particular environments.

The adaptors of this invention are designed particularly for use with quartz lamps of the single-ended type, meaning, their terminals are at one end thereof, and specifically to quartz lamps of this type which have a ceramic sleeve 70, with or without an outer metal sleeve as 71 in FIG. 2, on such ceramic sleeve, around their Molyfoil fuse sections 72, which sleeve structure is intended to act to dissipate the heat generated by the lamp and thus protect its Molyfoils from rupturing. These sleeves have a bottom bevel as is seen at 73 in FIG. 15. Upon mounting such quartz lamp in any adaptor herein for which it is suited, its provided protective sleeve will contact and will seat onto the frusto-conical seat as 75 therefor provided, whereupon the casing of the adaptor will serve as an auxiliary large and effective radiator, functioning to dissipate the heat generated by the quartz lamp, thus lengthening lamp life and protecting damage and fusing of metal parts.

This invention is capable of numerous forms and various applications without departing from the essential features herein disclosed. It is therefore intended and desired that the embodiments herein shall be deemed illustrative and not restrictive, and that the patent shall cover all patentable novelty herein set forth; reference being had to the following claims rather than to the specific description and showings herein, to indicate the scope of this invention.

I claim:

1. An adapter to be mounted in the socket of an electrical lighting apparatus designed to receive the terminalcarrying base of an electical lamp whose filaments midpoint is a predetermined comparatively long distance from the base, and for receiving an electrical halogen quartz lamp of the type having its terminals at one end of its envelope, whose filaments mid-point is a comparatively short distance from its terminal-carrying end, and whose said envelope has thereon a short sleeve of heat conductive material immediately beyond its said terminals, comprising a socket means to receive the terminals of the quartz lamp, an open-ended heat-dissipating tubular metal casing having a comparatively much larger surface than that of the sleeve, an insulative element holding such socket means which is to receive the terminals of the quartz lamp, securely positioned together with such socket means, within and at one end of said casing; said casing being turned in at said end thereof, providing a seat thereby for the end of the sleeve nearest the terminals of the quartz lamp to rest against, whereupon heat generated by operation of said quartz lamp will be conducted by said sleeve to said casing, a terminal carrying base to be received by the socket of the lighting apparatus, carried by said casing at its other end, and conductors within the casing, respectively connecting the terminals of the means at one end of the casing to the terminals of the means at the other end of the casing; the distance from the midpoint of the filament of the quartz lamp to the terminalcarrying base on the casing, when said quartz lamp is mounted in the socket means on said casing so said sleeve contacts said seat, is equal substantially to said predeter mined distance.

2. An adaptor as defined in claim 1, wherein the insulative element is a post, and the socket means within the casing is to receive a male screw shell having a central contact terminal insulated therefrom, and said socket means comprises a metal female screw shell to receive such male screw shell; said female screw shell having an outward flange at one end, a tubular ceramic shroud surrounding said female screw shell, a ceramic saddle intermediate said shroud and post; said shroud and post having counterbores receiving and serving as seats for said saddle, a springy metal strip straddling said saddle, an opening in the saddle to admit said central terminal; the flange of said female screw shell being within the counterbore in the shroud and held in place by the saddle; the other end of the female screw shell being adjacent and spaced from the seat on the casing; the distal end of the shroud, near the said other end of the female screw shell, being against the seat on the casing; said conductors being through hole structure in said saddle and post; said female screw shell and strip constituting the terminals of said socket means, and means on the casing holding the ceramic components in tight assembly within the casing.

3. An adaptor as defined in claim 2, wherein the opening of that end of the shroud which bears against the seat on the casing is flared, and such seat being turned into said flared opening whereby said seat is a frustoconical ring shape.

References Cited UNITED STATES PATENTS 1,565,500 12/1925 Ritter 339-167 X 2,279,635 4/1942 Morley 339167 X 3,097,903 7/1963 Moore 339112 X FOREIGN PATENTS 109,359 4/1928 Austria.

RICHARD E. MOORE, Primary Examiner. 

